These files were already out of step with the project's Prettier config
before this branch of work; running `pnpm format` finally swept them up.
No semantic changes.
Kept separate from the functional commits so the reformatting does not
bury them in diff noise.
The old nav used bare lowercase slugs and leaned on filesystem order for
every sidebar.
- Replace the three existing nav entries with six labelled ones, keyed
through i18n.json so both locales resolve to their own text from
identical _nav.json files.
- Add _meta.json for blogs and opensource-projects, grouping entries by
topic instead of leaving them alphabetical.
- Rename the Blogs and Notifications pages so their titles match the nav
labels (Insights and News).
- Point the notification page's account-settings link at GitHub, as the
Gitea instance it referenced is retired.
Frees /products/ for the product page and makes the open-source archive
explicit, rather than leaving two sections that both look like "projects".
- Move the directory in both locales and update the 18 internal links
pointing into it.
- Rework helix for the GitHub layout: server/ and web/ are directories in
a single repository there, not the two separate repositories Gitea had.
The "fork both repositories" step and the section wording follow.
- Correct helix's stated Java version to 21, which is what the build
actually targets.
zihluwang